Tunable metasurfaces with liquid crystals

Nazmi Yilmaz, Fehim T. Bagci, Aytekin Ozdemir, Ibrahim H. Giden, Ahmet Ozer, Yuzuru Takashima, Hamza Kurt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

Intensive researches in the area of metasurfaces have provided a new insight to obtain flat and compact optical systems. In this letter, we numerically show that, highly efficient tunable beam steering effect in transmission mode is achieved at wavelength λ = 550 nm using nematic liquid crystals (LCs) infiltrated into double sided metasurfaces. Using the electrooptical feature of LCs, the phase profile of the metasurfaces is controlled and thus, the transmitted beam is deflected within the range from -15° to 15° steering angles. Transparent dielectric materials are used in the designed structure that provides highly efficient beam-steering; the corresponding transmission efficiency is above 83% in the visible spectrum, which is another superiority of the proposed hybrid tunable structure over present plasmonic/metamaterial approaches. The designed metasurface still preserves its beam deflection property covering the visible spectrum and hence, such hybrid structure can be implemented for broadband electro-optically controllable beam steering applications.

Original languageEnglish (US)
Title of host publicationMetamaterials XI
EditorsAnatoly V. Zayats, Allan D. Boardman, Kevin F. MacDonald
PublisherSPIE
ISBN (Electronic)9781510618688
DOIs
StatePublished - Jan 1 2018
EventMetamaterials XI 2018 - Strasbourg, France
Duration: Apr 23 2018Apr 26 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10671
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherMetamaterials XI 2018
CountryFrance
CityStrasbourg
Period4/23/184/26/18

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Keywords

  • liquid crystals
  • metasurfaces
  • nanostructured materials
  • optoelectronic devices

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Yilmaz, N., Bagci, F. T., Ozdemir, A., Giden, I. H., Ozer, A., Takashima, Y., & Kurt, H. (2018). Tunable metasurfaces with liquid crystals. In A. V. Zayats, A. D. Boardman, & K. F. MacDonald (Eds.), Metamaterials XI [106712N] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10671). SPIE. https://doi.org/10.1117/12.2307515